Affiliated with a Castle Connolly Top Hospital
Who is Dr. Grehan, Thoracic Surgeon in Sioux Falls, SD?
Where did Dr. Grehan go to medical school and complete their residency?
Medical School: University of Minnesota Med School
Is Dr. Grehan board certified as a Thoracic Surgeon?
Yes, Dr. John Grehan, MD, PHD is board certified by the American Board of Surgery , American Board of Thoracic Surgery
What languages does Dr. Grehan speak?
Dr. Grehan and their clinical team can communicate with patients in the following languages:
- English
What conditions does a Thoracic Surgeon like Dr. Grehan typically treat?
As a Thoracic Surgeon, Dr. Grehan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Grehan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Hardening of the Arteries in the Heart without Chest Pain
- Coronary Artery Disease with Angina
- Atherosclerosis
- Coronary Artery Disease
- Silent Coronary Artery Disease
- Asymptomatic Atherosclerosis
- Atherosclerotic Heart Disease with Angina
- Chest Pain from Heart Disease
- Angina Pectoris
ICD-10 Codes:
- I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris
- I25118: Atherosclerotic heart disease of native coronary artery with other forms of angina pectoris
Also known as:
- Narrowed Aortic Valve
- Heart Valve Disease
- Aortic Valve Stenosis
- Tight Aortic Valve
ICD-10 Codes:
- I350: Nonrheumatic aortic (valve) stenosis
Also known as:
- Circulatory System Surgery Aftercare
- After Surgery
- Post-cardiac surgery care
- Vascular surgery aftercare
- Heart surgery recovery
ICD-10 Codes:
- Z48812: Encounter for surgical aftercare following surgery on the circulatory system
What procedures does a Thoracic Surgeon like Dr. Grehan typically perform?
As a Thoracic Surgeon, Dr. Grehan performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Grehan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Endoscopic Vein Harvest for Bypass
- Endoscopy
- Video-Assisted Vein Harvest
- Minimally Invasive Vein Removal
- Endoscopic Saphenous Vein Harvest
- Vein Harvesting for CABG
CPT Codes:
- 33508: Endoscopy, surgical, including video-assisted harvest of vein(s) for coronary artery bypass procedure (List separately in addition to code for primary procedure)
Also known as:
- Coronary Artery Bypass Graft (CABG)
- Coronary Artery Bypass Surgery
- Heart bypass surgery
- CABG surgery
- Arterial bypass graft
CPT Codes:
- 33533: Coronary artery bypass, using arterial graft(s); single arterial graft
Also known as:
- TAVR (Transcatheter Aortic Valve Replacement)
- TAVI
- Percutaneous Aortic Valve Replacement
- Transfemoral Aortic Valve Replacement
- Minimally Invasive Heart Valve Surgery
CPT Codes:
- 33361: Transcatheter aortic valve replacement (TAVR/TAVI) with prosthetic valve; percutaneous femoral artery approach
Also known as:
- Left Atrial Appendage Closure (Open Heart)
- LAA Exclusion Surgery
- Left Atrial Appendage Ligation
- Open Heart LAA Closure
CPT Codes:
- 33268: Exclusion of left atrial appendage, open, performed at the time of other sternotomy or thoracotomy procedure(s), any method (eg, excision, isolation via stapling, oversewing, ligation, plication, clip) (List separately in addition to code for primary procedure)
Does Dr. Grehan accept my insurance?
Dr. Grehan accepts most major insurance plans. Important: Please contact the office before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Grehan accept in Sioux Falls, SD?
Dr. Grehan in Sioux Falls, SD accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Federal government of the United States
Medica Group
Medicare
Mutual of Omaha
Wellmark Blue Cross Blue Shield
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Where is Dr. Grehan's office located?
What hospitals are Dr. Grehan affiliated with?
Castle Connolly Top Hospital
This doctor is affiliated with a Castle Connolly Top Hospital.
Dr. Grehan has admitting privileges at the following hospitals:
What is Dr. Grehan's NPI number?A National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Grehan's National Provider Identifier (NPI) number is 1275549784.
What common questions do patients ask about Dr. Grehan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Grehan